Just in case you needed another reason to resist the urge to commit mass germicide, a new study suggests that triclosan could promote the growth of breast cancer cells.

In the study, published in the journal Chemical Research In Toxicology, researchers tested the effects of triclosan and octylphenol on human breast cancer cells (both in petri dishes and on live mouse subjects). They found that the chemicals interfered with cancer growth genes — causing cancer cell proliferation in the petri dishes and larger tumors on the mice.

This study is the latest in a long line of existing research on the detrimental effects of endocrine-disrupting chemicals like triclosan, which mimic hormones and wreak havoc on our basic body processes. Especially considering the FDA's claims that using antimicrobial products is no better than washing with regular soap and water, maybe it's time to give up the goop for good. (Science Daily)